Improvement in sewing-machine casters



B. F. RYBBR. Sewing-Machine Casters.

No. 200,092. Patented Feb..5,187s.

Winesses rp" A 2622] ,Tjyer W l r Ivizflntar UNITED STATESPATENT OFFICE.

BENJAMIN F. RYDER,

OF NEW HAVEN, ASSIGNOR TO MARTIN OF-DANBURY, CONNECTICUT.

W. FOSTER,

IMPROVEMENT IN SEWING-MACHINE CASTERS.

Specification forming part of Letters Patent No. 200,092, datedFcbrnary5, 1878; application tiled December 11, 1877.

To all whom it may concern:

Be it known that I, BENJ. F. RYDER, of New Haven, in the county of NewHaven and State of Connecticut, have invented a new Improvement inSewing -Machine Casters; and I do hereby declare the following, whentaken in connection with the accompanying drawings and the letters ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part of this specification,and represent, in-

Figure l, plan or top view; Fig. 2, transverse section, looking towardthe treadle.

This invention relates to an improvement in caster attachments forsewing-machine tables, having for its object to support the tabledirectly on the feet of the frame, and to throw that support on thecasters whenever it is desirable to move the table, and to make theadjustment from solid bearing to the casters, and vice versa, easy andsimple; and it consists, principally, in a frame carrying a caster ateach end, and having vertical parallel guides thereon, combined with aslide on said guides, upon which the legs of the sewingmachine rest, andalso with mechanism for raising or lowering said slides, whereby themachine vis thrown upon the casters when desirable to move it, or restsfirmly upon the oor at other times, and as more fully hereinafterdescribed and claimed.

A is a frame or connection extending across each end; and at each end ofthe two sides of the frame A a caster-wheel, B, is arranged, preferablyswiveled, so as to readily turn in either direction. From each of theseframes A a pair of upright guides, C, extend parallel to each other. Thetwo frames are connected by a rod or shaft, D. On the said guides C aslide, E, is placed so as to move freely up and down on the said guides.From each of the said slides arms F project, so that the tablelegs willrest thereon, and allow the feet to rest on the floor when the slidesare down, as indicated in broken lines, Fig. 2. These slides areconnected respectively to the legs at each end of the table by means ofa clamp,

G, grasping the tie between the two legs; or it may be secured at otherconvenient points, or it may simply rest thereon, the securing devicebeing simply a convenience. each of the slides an arm, H, extendsinward, and on the shaft D two cams, I, are arranged, correspondingrespectively to the arms H, and so that by turning the shaft D the camsI will engage the arms H, and raise both the slides simultaneously, andwith the slides the machine-table.

From the shaft D a treadle or lever, L, extends to the front, and,preferably, a continuation of one of the cams, so that by placing thefoot upon the treadle L, and pressing downward, as indicated in brokenlines, Fig. 2, the slides will be simultaneously raised.

In order that the table may remain supported when raised for movement, aprojection, a, is made on the frame, so that the treadle L will passbeneath it when pressed downward, as seen in broken lines, Fig. 2, andwill be so engaged until the lever be disconnected. This projection amay be a latch, or it may be rigid. In the latter case a slighttransverse play 'must be allowed to the lever on the shaft.

It will be understood that it is not intended to broadly claim theapplication to a sewingmachine table of casters having combined withthem a device so as to throw the weight of the machine onto or oif fromthe casters, as may be desired, because such an arrangement is wellknown.

I do not broadly claim an independent cas ter-frame on which the machinemay be set, as such I am aware is not new; but

What is claimed as new, and desired to be secured by Letters Patent, is

l. The combination of the frame carrying a caster at each end andvertical parallel guides on the said frame with a slide on said guides,and constructed to receive the legs of the ma chine, substantially asspecified.

2. The combination of the frame carrying a caster at each end andvertical parallel guides on the said frame, a slide on said guides, and

From y Y 'eonstrueted't receive the legs of themaehine, with `camsV andtreedle, and a latehmg devine with Gams and treed1e,rsubstentially es'eie-V Vto'engenge the said treadle, substantially es seribed. described.3. Theeombinaitonof the frame carrying a 'Y Y Y BENJ. F. RYDER. casteret each end and vertical parallel Yguides Witnesses: Y Y, y Y e Y on theseid frzmnemJ slide Von seid guides, zmlY JOHN E. ERLEQ Vrf YYeonstmetedv to receive the legs ef the machine, n Y H. A. KITSON.

